purves



1,465,721 J. A. PURVES ATTACHMENT FOR MILLING MACHINES Filed June 2, 1921 4 Sheets-Sheet 1 46 431 j; if

[N V EN TOR.

A TTORNEYS Aug. 21, 1923. 1,465,721

J. A. PURVES ATTACHMENT FOR MILLING MACHINES Filed June 2, 1921 I 4 Sheets-Sheet 2 J cTfr-s u I w fl/14M I-N VENTOR.

A TTORNEYS J. A. PURVES ATTACHMENT FOR MILLING MACHINES Filed June 2. 1921 4 Sheets-Sheet 5 INVENTOR.

ATTACHMENT FOR MILLING MACHINES Filed June 1921 4 Sheets-Sheet 4 wzmf IN VEN TOR.

ATTORNEYS Patented Aug; 21, 19:23,

iaasazi rarssr As'sIeNMEirTs, TO FEED rnrnmiiaiv, or era-Acme; new rose;

shamanism sea MILLING immerses I .Eiifiliitibii i'ile'd June 2,

To all wh'omit mdy concern:

Onondaga and State of New York; have invented afcerta-in new and. useful Attachment for Milling Machines, of WlIlCllihe' following is a specification; c

This invention has for its object a particularly simple" and eificient attachment for milling machines and the ilike'bywhich drilling tappiiig millihg and siniilar oper ations can be perforrned; which attachment is particularly simiale in censtruction; read: ily attached in position; and highlyefiicient and durable in use and further which can be swung or swivel'e'd to any angle to suit the convenience of'the'operator; The invention consists in the novel features and in the; combinations and constructions hereiiiaft'er setfo'rth and claimed: 1

In describingthis invention; referenceis had to the accompanying drawings iii which like characters designate corresponding parts in all the views; 1 V .Figure 1 is an elevation or this attachmerit, the same being shovvn as attached to v the head of a milling machine.

v Figure 2ti s' an elevation looking to the left: in Fig. 1; parts heingjomitted:

Figure 3 is a plan view of'thiis attachment, parts as the cap and driving sleeve being removed; and the tie rods-being shown as spread outvvardly and broken away:

Figure 4 is ase'ctional: view on line Fig"; V M

--'l;his attachment com-prises generally; a body formed With-an upright'beariiig ands transverse bearing intersecting oire side of part located in the transverse bearing and also a-norr-rotata'ble part-in the. upright bearing and connected to the spindle to shift it axially, and gineans for attaching the body to apart as-the head of'alrmilling or other machine comprising a coupling member connected to the body by a swiveljoint: concentrio with the axis of the spindle; and mechanis'in for; detachably' securing this coupling memberto the head of a milling machine;

designates the body which includes a cylindrical central portion-*2; and laterally extending hubs oribosses- 3-; the body being formed- 'With a central upright bearing 4 1921. serial 1%. 474,459.

and a. transverse bearing 5 which extends Be it known that L JOHN A: Pnnvss, a resldent 01 Syracuse, 1n the county of mit'rotary mo-veinent'to the-spindle, 6', the} driving sleeveibeing inserted when the at- JOHN A. reeves,- or YORK. rename, BY treats are ai-as tachmerit is in use, in the tapered-bore 16 of a milling machine 1 7 7 The means for feeding the tool spindles; axially; relatively to the bo'dy and the taper sleeve?) comprises apartasthefshaft 12 journaled in the trahsvers'e bearing 5 of of the rotatable spindle Within the head: 11*

the body 1 and having gear teeth 13 v'vhioli I inesh with rack teeth-14 provided a a non: rotatable sleeve 15 in the bearing iand also extending into the taper sleeve 9; thesleeve 15 encircling the spindle '6'; The spindle 6 and'sleeve' 15 are held fi' oin" relative axial movement by suitable means as collars 16 and 17 provided on the spindle'fiat the upper and lower ends of the sleeve 15; shaft 12, is provided Withsuitable means for turning it as knurled Wheels 18 mounted'on the ends thereof, each Wheel'having' suitable peripheral sockets 19 for receiving a rod 20fwhich-serves as" a handle; Obviously, during turning of the shaft" 12 the rotary movement thereof will be transmitted to the sleeve 15 to move the sleeve 'v'erticallyand through the sleeve :15 to the spindle t? to feed the samea-Xially While the: spindle is 'rotatingirithesleeve 15;' y the upnight hearing, a rotatable-spindle ar- The shaft12: is rotated infirm-airmen opposite to that on which it is fed by the Wheels 18 any suitable" hereshown, it is 'fed in a retrograde diret tion by means of a flat spiral spring 21 located in a head or abarrel22 forined on one of'the bosses or'hubs 3,-"an'd cdnne'cted' at one;

manner;

29 extending transversely of the"bearing 5 7 near the spring barrel 22"and meshing with gear teeth on the shaft 12, and a stop ad justably mounted on the rack 28 and arranged to engage the periphery of the spring barrel when the shaft 12 has been rotated asufiicient distance to slide the rack to bring the stop 30 in contact with the spring barrel. The stop '30 may be of any suitable form, size and construction, and as here shown, includes a pair of collars slidable on the rack 28 and having screw threaded engagement at 31 with each other by means of which a fine adjustment is obtained, one of the collars havinga pawl 32 which engages teeth of the rack 28 to obtain an approximate adjustment.

33 designates a coupling member mounted on the body concentric with the spindle and connected to the body by a swivel joint, and as here shown, itis formed with a central opening receiving a boss 34 provided on the upper side of the body concentric with the bearing 4 and it is held in position by a re-- taining ring orv plate 85 arranged in a countersink 36 concentric with said opening, the plate being secured to thebody or a boss 34 and overlying the bottom of the counter sink, it being secured to the body by screws 37 extending through the plate and into the boss 34. The lower end of the driving sleeve 9 also extends into this countersink 36 and a nut 40 threads thereon. The upper surface of the coupling member around the countersink forms a bearing or seat for the lower end of the head 11 of the machine to which this device is attached.

41 is a cap or collar for seating on the upper head of the head 11 of the milling ma chine, and 42 are tie rods pivoted at 43 to ears 44 provided on diametrically opposite sides of the coupling member 43 and having their upper ends movable. into slots 45 provided in lugs on the cap 41, suitable nuts 46 threading on the upper ends of these tie rods and serving to clamp the coupling member 83 and the cap 41 against opposite ends of the head 11 and the milling machine and thus securely attach the body 1 to the head of the milling machine, but owing to the swivel joint between the coupling member 23 and the body 1, the body can be swung to any angle to suit the convenience of the operator. 1

What I claim is: 1

1. An attachment for milling machines comprising a body, a tool carrying spindle journaled in the body, means carried bythe body for feeding the spindle axially. and means for attaching the body to a milling machine including a swivel joint concentric with the spindle and means for normally holding the body from swiveling movement, zulstantially as and for the purpose'speci- 2. An attachment for milling machines comprisinga body formed with an upright bearing, a rotary. spindle in the upright bearing, a coupling member connected by a swiveled joint to the body concentric with the upright bearing, and means for attaching the coupling to the head of the milling machine and for normally holding the body 7 from swiveling movement, substantially as and for the purpose set forth.

' 3. An attachment for milling machines comprising a body formed with an upright bearing, and a transverse bearing intersecting one side of the upright bearing, a rotary spindle in the upright bearing, a coupling member connected by a swiveled joint to the body concentric with the upright bearing, means for attaching the coupling to the head of the milling machine and for normally holding the body and coupling member from swiveling movement, and

means arranged in the transverse bearing and coacting withthe spindle to feed and withdraw the same, substantially as and for the purpose described.

4. An attachment for milling machines comprising a body formed With an upright bearing, a tool spindle in the upright bearing, a coupling member'connected to the body by' a swivel joint concentric with the uprightbearing and having a seat for one end of the head of the milling machine, a member for seating on the other end ofthe head of the milling machine, and tie rods connecting said members and means for tightening the tie rods to hold the coupling member and body from swiveling movement, substantially as and'for the purpose specified.

5. An attachment comprisingla'body formed with an upright bearing,.and a transverse bearing intersecting one side of the upright bearing, a rotatable tool spindle in the upright bearing, a coupling'member connected to the body by a swivel joint concentric to the upright bearing and having a seat for one endof the head of a--milling machine, a member for seating on the other end of the head of the milling machine, tie rods connecting said members, means for'tightening the tie rods and holding the coupling member and body from swiveling movement, and means arranged in the transverse bearing for raising and lowering the tool spindle, substantially and for the purpose set forth. 6. An attachmen'tfor milling machines comprising a body formed with an upright bearing and with the transverse bearing intersectingione side of the upright bearing,

a rotatable spindle inthe upright bearing, a'

sleeve in the upright bearing, the spindle being rotatablyfmounted in" the sleeve and having means for holding it from axial movement relatively to the sleeve, the sleeve being formed with arack, a shaft journaled in the transverse bearing and. having gear for milling machines 1 tee'th meshing withthe rack, means for rotating the shaft, a coupling member mounted on the body concentric with the upright bearing and being connected to the body by a swivel joint, and means for attaching the coupling member to ajmilling machine head and for holding the coupling member and body from swiveling movement, substantially as and for the purpose set forth.

7. An attachment for milling machines comprising a body having an upright hearing and a transverse bearing intersecting one side of the upright bearing, a tool spindle rotatable in the upright bearing and mechanism for feeding the spindle axially including a shaft journaled in the transverse bearing, and means interposed between V 3 the shaft in the spindle to shiftthe spindle axially during turning'of the shaft, means for limiting the feeding of the spindle by the shaft comprising a sliding rack extend-J ing transversely of said transverse bearing 'of Onondaga and State of New York, this 1st day of June, 1921.

JOHN PURVES. 

